Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Class 11 Physics (India): Standing waves on strings
David explains how and why standing waves occur, and well as how to determine the wavelengths for a standing wave on a string. Class 11 Phy…
VideoFree13 minutes
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Health and medicine: What is cerebral palsy and what causes it?
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree11 minutes
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Class 11 Physics (India): Intro to significant figures
Significant figures refers to the number of important single digits in a value, often a measurement. This video is an introduction to signi…
VideoFree5
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Class 11 Physics (India) - Hindi: Venturi effect and Pitot tubes (Hindi)
Ram explains the Venturi effect and the role and function of Pitot tubes. Class 11 Physics (India) - Hindi To help students who prefer to l…
VideoFree16
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Class 12 Physics (India): Transistor current and parameters
Let's explore the names of the currents through the transistor, find the connection between them and talk about transistor parameters. Thes…
VideoFree10
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Class 11 Physics (India): Deriving formula for centripetal acceleration from angular velocity
Deriving formula for centripetal acceleration in terms of angular velocity. using linear speed formula. Class 11 Physics (India) Let's lear…
VideoFree6
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Class 11 Physics (India): Solved example: strength of femur
How much weight can our thigh bone withstand? In this video, we will calculate the maximum force our thigh bone can withstand. The answer m…
VideoFree6
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Class 11 Physics (India): Intersection points of y=sin(x) and y=cos(x)
Sal draws the graphs of the sine and the cosine functions and analyzes their intersection points. Class 11 Physics (India) Let's learn, pra…
VideoFree11
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Chemistry: Half-life of a first-order reaction
Deriving half-life equation of a first-order reaction starting from the integrated rate law. Chemistry Did you know that everything is made…
VideoFree8 minutes
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Health and medicine: Shunting in the heart
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
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Class 11 Physics (India): Cross product 1
Introduction to the cross product Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting wi…
VideoFree10 minutes
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Health and medicine: Testosterone
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
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Class 12 Physics (India): PN breakdown and avalanche
What happens if the reverse biased voltage gets too high? The diode undergoes breakdown In this video we will explore what this 'breakdown'…
VideoFree9
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Class 10 Physics (India): Human eye: accommodation and near point
Why do distant things get blurred when we concentrate on things close to us? Why can't we see things which are very close to us? Let's expl…
VideoFree10
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Electrical engineering: Diode graphical solution
We solve a diode circuit graphically by plotting a diode i-v curve and resistor to find the intersection. Graphical solution methods are a …
VideoFree8 minutes